Experimental investigation on concrete by partial replacement of cement with indigenous waste

In India maize is the third most cereal crop. The total quantity of Corn Cob waste in India is 5 million tonnes per year. The total quantity of waste in Tamilnadu is 2700 tonnes per year. Conventional concrete is one of the expensive when compared to concrete consists of Corn Cob Ash (CCA).
Therefore use of agricultural waste for the partial replacement of cement increases substantially and it is to be a suitable replacement for the cement in the form of waste-to-wealth. Corn Cob is the hard cylindrical core that bears the kernels of an ear of corn, usually an agricultural by-product found after removal of Corn. Here Concrete mix of M30 grade is prepared for various concrete mixes by varying percentage replacement of cement with corn cob ash by 0%, 5%, 10%, 15%, and 20%. Concrete cubes were cast and cured between the ages of 7 and 28 days. A compressive strength test was carried out on the cubes, split tensile strength between a cylinder and the flexural strength on beam. The outcome showed that the strength of concrete decreased with increasing replacement with the corn cob ash (CCA).